O-Aminophenol Sulfate

INCI: O-AMINOPHENOL SULFATE

CAS Number
67845-79-8
Function
Hair dye (oxidative) — salt form of o-aminophenol
Safety Rating
POOR

Regulatory Status

🇪🇺 EU Status restricted
EU Max Conc. 2.0%
🇺🇸 US Status permitted
US Notes Permitted under coal-tar hair dye exemption; same labeling requirements as free base

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

All warnings and restrictions identical to o-aminophenol; concentration limit applies to free-base equivalent — formulators must adjust for sulfate salt molecular weight

⚠️
Concern Level: High

Frequently Asked Questions

Is O-Aminophenol Sulfate safe in cosmetics?

All warnings and restrictions identical to o-aminophenol; concentration limit applies to free-base equivalent — formulators must adjust for sulfate salt molecular weight The EU classifies O-Aminophenol Sulfate as "restricted". Safety rating: POOR.

Is O-Aminophenol Sulfate allowed in the EU?

O-Aminophenol Sulfate EU regulatory status: restricted. Maximum allowed concentration: 2.0%. This is based on EU Regulation 1223/2009 and its amendments.

What does O-Aminophenol Sulfate do in cosmetics?

O-Aminophenol Sulfate functions as: Hair dye (oxidative) — salt form of o-aminophenol. It is classified as a cosmetic ingredient in our database. CAS number: 67845-79-8.

What is the Margin of Safety for O-Aminophenol Sulfate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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